Title:
LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/190487
Kind Code:
A1
Abstract:
The present invention provides a lighting device comprising a light source and a display member (101) that displays a first design on a front surface (101a) by transmitting light emitted by the light source forward in the shape of the first design, wherein: the display member (101) includes a front surface part (110) which forms the front surface (101a) and which has a first portion that transmits the light in the shape of the first design and a light guide (120) which is disposed behind the front surface part (110) and emits the light from the light source toward the front surface part (110); the light source is disposed in a different location from the first portion of the front surface part (110) in a plan view of the front surface (101a); the light guide (120) has a portion that decreases in thickness as the position is apart from the light source; and projections (127) are formed on the rear-side surface (101b) of the light guide (120), the projections (127) having such an incident surface (127a) that an angle of incidence (θi1) of the light from the light source is a predetermined angle.
Inventors:
MASUDA KATSUYOSHI
Application Number:
PCT/JP2021/044873
Publication Date:
September 15, 2022
Filing Date:
December 07, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B60K35/00; B60Q3/283; B60R13/00; F21S2/00; F21V5/00; F21V5/04; G09F13/04; F21Y115/10
Domestic Patent References:
| WO2019225636A1 | 2019-11-28 |
Foreign References:
| JP2018067107A | 2018-04-26 | |||
| JPS57130880U | 1982-08-14 | |||
| JP2001051616A | 2001-02-23 | |||
| US20080225554A1 | 2008-09-18 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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